The Holt method (exponential smoothing with trend andwithout seasonality) is being used to forecast weekly carsales at TOD Ford. Currently, the base is estimated to be 50cars per week, and the trend is estimated to be 6 cars perweek. During the current week, 30 cars are sold. Afterobserving the current week’s sales, forecast the number ofcars to be sold during the week that begins three weeks afterthe conclusion of the current week. Use a b 0.3.

The Holt method (exponential smoothing with trend andwithout seasonality) is being used to forecast weekly carsales at TOD Ford. Currently, the base is estimated to be 50cars per week, and the trend is estimated to be 6 cars perweek. During the current week, 30 cars are sold. Afterobserving the current week’s sales, forecast the number ofcars to be sold during the week that begins three weeks afterthe conclusion of the current week. Use a b 0.3.

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter13: Regression And Forecasting Models

Section13.7: Exponential Smoothing Models

Problem 28P: The file P13_28.xlsx contains monthly retail sales of U.S. liquor stores. a. Is seasonality present...

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The file P13_29.xlsx contains monthly time series data for total U.S. retail sales of building materials (which includes retail sales of building materials, hardware and garden supply stores, and mobile home dealers). a. Is seasonality present in these data? If so, characterize the seasonality pattern. b. Use Winters method to forecast this series with smoothing constants = = 0.1 and = 0.3. Does the forecast series seem to track the seasonal pattern well? What are your forecasts for the next 12 months?
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